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On-Sky Demonstration of a Fluid Atmospheric Dispersion Corrector
Publications of the Astronomical Society of the Pacific
The first on-sky demonstration of a fluid atmospheric dispersion corrector (FADC) is presented using the Anglo-Australian Telescope at Siding Spring Observatory. The atmospheric dispersion correction was observed with a three-colour CCD camera at the telescope's Cassegrain focus. The FADC contains a pair of immiscible fluids in a small glass container placed very close to the telescope focal plane. A pair of fluid prisms is formed and the apex of the two prisms varies with telescope zenithdoi:10.1086/669709 fatcat:jueytkjzfbbtdnfyq5lmylzo5e